S
M
T
W
T
F
S
30
76°
53°
31
76°
50°
1
72°
47°
2
67°
48°
3
67°
48°
4
68°
43°
5
69°
48°
6
75°
52°
7
75°
51°
8
72°
51°
9
72°
50°
10
71°
51°
11
74°
50°
12
73°
51°
13
74°
51°
14
75°
39°
15
65°
38°
16
64°
39°
17
65°
40°
18
65°
38°
19
62°
41°
20
63°
40°
21
68°
46°
22
71°
45°
23
71°
38°
24
67°
33°
25
61°
37°
26
65°
40°
27
68°
44°
28
68°
43°
29
67°
34°
30
63°
33°
1
59°
36°
2
61°
41°
3
65°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Columbia
Columbia's September 2026 forecast shows daily high temperatures ranging from 59° to 76°, with overnight lows between 33° and 53°. The average high for September is 68° with an average low of 44°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Columbia. See also: October | November | December.
